Have you ever heard of a Perpetual Motion Machine? More to the point, have you ever heard of why Perpetual Motion Machines are impossible? One of the reasons is because of the... Read more »
View full lesson: http://ed.ted.com/lessons/what-is-entropy-jeff-phillips There’s a concept that’s crucial to chemistry and physics. It helps explain why physical processes go one way and not the other: why ice melts, why cream spreads... Read more »
